PLATE IV. 



FIGURE 16. Chiridotea ceeca Harger (p. 338); dorsal view, enlarged nearly four 

 diameters ; natural size indicated by the line at the right. 



17. The same ; a, antennula ; 5, antenna ; each enlarged twelve diameters. 



18. The same ; a, maxilliped from the right side, external view ; I, external 

 lamella ; m, maxilliped proper; l r 2, 3, first, second, and third segments 

 of the palpus of the maxilliped, enlarged twenty diameters ; 6, one of 

 the first pair of legs, magnified twelve diameters; c, uropod from the 

 left side, inner view, showing the two rami articulated near the tip. 



19. The same ; pleopods of second pair from the right side, anterior views, 

 enlarged ten diameters ; a, common form in males ; 5, rarer form in 

 male ; ,. elongated stylet, articulated near the base of the inner lamella ; 

 e, form in the female. 



20. Chiridotea Tuftsii Harger (p. 340); female ; dorsal view, enlarged five 

 diameters ; natural size indicated by the line at the right. 



21. The same; left maxilliped, enlarged twenty -five diameters; e, external 

 lamella; m, basal segment; 1, 2, 3, segments of palpus. 



22. The same ; pleopod of the second pair, from a male, enlarged twenty 

 diameters; s, elongated stylet, articulated near the base of the inner 

 lamella. 

 (All the figures were drawn, from nature by O. Harger.) 



